A California man is suing Microsoft, alledging that his Surface tablet did not provide the advertised amount of disk space. The 32G device has 16G of space for users, as the operating system uses the other 16G. The 64G Surface leaves 45G free for users. The case will turn on whether Microsoft has clearly explained to customers how much free space the Surface leaves for their use outside of the OS. How much disk space does your OS consume?

No, ...it doesn't. The device DOES have 32GB of storage. Part of it is used by the OS. Just like every other device.

No. If you advertise a box with five cubic metres of space and you actually get two then the law has and can act on that kind of misrepresentation. You cannot argue that you do actually get that advertised storage but the walls of the box take up over 50% of it. It simply doesn't work like that.

I hate to burst the bubble of the non-sensical arguments you people are making but there have been umpteen legal precedents for this in many, many countries. It's as old as advertising itself.